Process of manufacturing tie-plates.



v E. H. BELL. v PROCESS 0? MANUFACTURING TIE PLATES.

APPLICATION FILED AUGHZG, 190s.

Patented Oct. 26, 1909.

3 SHEETS-$HEET 1.

E. H. BELL. PROCESS ,OF MANUFACTURING TIE PLATES. APPLICATION FILED AUG. 26, 1903! 938,109. R Patented 0013.26, 1909.

3 SHEETSSHEET2..

. /fifiassai Fix/aim? E. H. BELL. PROCESS OF MANUFAGTURING TIE PLATES.

APPLICATION FILED AUG. 26, 1906.

938,109. Patented Oct-26,1909.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

EDWIN H. BELL, CHICAGO,ILLINOIS.

PROCESS OF MANUFACTURING TIE-PLATES.

Specification of Letters Patent.

Patented Oct. 26, 1909.

Application filed August 26, 1908. Serial No. 450,290.

exact description thereof, reference being had ,to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in the process of manufacturing railway tieplatesbf rolled steel and" of that kind in which the tie-plate is provided on its upper surface with a transverse rib forming a railabutting shoulder.

My invention consists in the matters hereinaftei' described and pointed out in the appended claims.

,My' improved process may be described in general terms as consisting in the steps of passing. a bar of metal successively beween pairs of rolls, one of which is grooved to form flanges on the lower surface of the plate, thereby step-by-step converting the bar into a continuous blank having longitudinal flanges on one surface, and then passing theblank between a pair of rolls, one

of which completes the formation "of the longitudinal flanges while the other is provided with transverse grooves spaced apart distances corresponding length of the tie-plate, thereby displacing the metal of the tie-plate bar longitudinally to form said rib, saidgrooves being of different depths at different parts, whereby the metal in each rib is displaced longitudinally thereof to make parts of said rib of unequal height and finally cutting the continuous blank into sect-ions to form the individual tie-plates.

My invention may be more readily understood by reference to the accompanying drawings illustrating the several steps constituting my novel process, in which drawings,-

Flgure 1 is an end view of a billet of metal. Fig. 2 IS a view in elevation of the adjacent parts of the peri heries of a pair of rolls between which t e billet is first passed. Fig. 3 is a viewsimilar to Fig. 2

with the desired.

showing apair of rolls between'which the,

billet is subsequently passed. Fig. 4. is a sectional view of the billet after having passed between several pairs of rolls. Fig.

'5 is a cross-sectional view of the billet at a later period of its treatment. Fig. 6 is a sectional view of the billet prior to being passed through the last pair of rolls. Fig. 7 is a longitudinal sectional view of the blank into which the billet has been converted, showing the adjacent peripheries of the last pair of rolls, which form the shoulders on the blank. Fig. 8 is a view in elevation of the last pair of rolls, which form the shoulders on the blank, the blank being shown in transverse cross-section. Fig. 9 is a fragmentary cross section of the upper roll illustrated in Fig. 7-, showing the recesses by means of which the rounded projections are formed on the rib. Fig. 10 is an end elevation of the completed tie-plate. Fig. 11 is an end elevation of a completed tie-plate of somewhat difi'erent'form. Fig.

12 1s a perspective view of the form of tie g plate shown in F ig. 10. Fig. 13' is a peizt spective view of the form of tie-plate show in Fig. 11. 7

As shown in the said drawings, Fig. 1 shows thecro'ss-sectional form of a metal billet 5 which is to be converted by, my improved process into tie-plates. (S a-lid? designate a pair of rolls between which the billet is passed, the roll 6 having three ribs 8, 8, 8, on its periphery while ther'oll 7 has four ribs 9, 9, 9, 9, onoits periphery. The cooperating ribs on the rolls serve to impart to the billet a cross-sectional form such asis shown in Fig. 2. Said rolls (3 and 7 are provided with side flanges 10 and 11, res ectively, which operate to prevent the billgt from spreading laterally as the same passes through or between the rolls. second pair of rolls 15 and 16 is employed to impart to the billet 5 a cross-sectional form, such as is shown in Fig. 3, the roll 15 having the four grooves 17, 17, 17, 17 on its periphery while the roll 16 has the four ribs 18, 18, 18, 18 on its .eriphcry, the grooves on the said roll lalieing arranged oppositely of the ribs on the roll 16 in such a manner that the metal displaced by the said ribs is pressed into the grooves of tlv f iiell 15.

In Figs. i, 5 and 6, the billet 5 is shown as it appears in cross-section after having plate.

passed between succeeding pairs of rollers, each subsequent pair being arranged nearer together in order that the billet w ll be gradually flattened and the perlpheries of the rolls in the successive pairs are of such shape as to gradually impart to the billet longitudinal grooves on one surface and lon gitudinal'alining flanges on its other surface, the said flanges being in line with the said grooves. The successive pairs of rolls between which the billet has passed in being converted into the cross-sectional form shown in Fig. 6, form longitudinal raised portions between the grooves on the upper surface of the plate, suchv raised portions bein formed to enable the metal to be longitu inally displaced in the subsequent steps by which the ribs are formed. The final form is imparted to the billet 5 by means of the rolls 20 and 21, illustrated in Figs. 7 and 8 of the drawings. The upper one of the said rolls, designated by the reference number 20, is provided upon its periphery with longitudinally arranged ribs 22, 22 which are adapted to displace the metal of the plate to form longitudinal depressions or grooves in the upper face ,of the bed For forming the transverse rib upon each of the said tie-plates transverse grooves are provided in the periphery of the upper roll 20, located at longitudinal distances apart equal to the length of a finished 1 plate.

recesses 23, 24, 25 and 26 (Fig. 9) which are Said grooves each consist of concave connected with each other byshallower ment of the metal of the rib longitudinally there'ofi In other words, in

parts of the grooves between them. The recesses 24 and 25', located one on each side of the central longitudinal. line of the plate, are of greater depth than the recesses 23 and 26 which are adjacent to the side margins of the plate. The grooves somade, form on the plate a continuous transverse rib 27, Figs. 10 and 12, having rounded projections 28, 29, 30 and 31, the projections 28 and 31 which are adjacent to the side margins of the plate and formed by the recesses 23 and 26 being of less height than the projections 29 and 30, formed by the recesses 24 and 25 of the said grooves, and all of the said projections being separated by depressions or notches 32, 32, formed by the shallower parts of the transverse groove in the roll. The

metal which forms said transverse rib, as.

a whole, is obtained in the rolling operation by displacement endwise of the metal of the plate, while the metal to form the higher rejections 29 and 30 of the rib is displaced aterally of the plate or endwise of'the groove in the roller, the shallower connecting parts of the said groove, between the concave recesses 23, 24,125. and 26, permitting such displacethe rolling opquired to form the higher rounded projections 29 and 30 is derived by lateral displacement of the metal from the parts of the rib having the lower projections 28 and 31 and at which the metal is depressed between the projections. The longitudinal alining flanges 33, 33 upon the bottom surface of the tie-plate are given a V-form in cross-sectional shape, by means of longitudinally arranged grooves 34, 34 in the periphery of the lower roll 21, said grooves 34, 34 being in line with the ribs 22, 22 upon the upper roll. After the billet has been passed between the last named pair of rolls it is cut transversely adjacent each transverse rib so that the said rib is located adjacent to one end of the plate. The said tie ;plate when completed is shown in Fig. 12. v

In-Fig. 13 is shown a completed tie-plate of a different form from that first described, the process of manufacture of which is the same ashereinbefore set forth. The main difference between the two plates consists in the form of the transverse rib which, in the latter case, is continuous, the high and low portions thereof having straight top edges parallel with the body of the plate, instead of being curved or rounded, as in the former case/ The lower surfaces of the plates are the same in both cases, but in the latter case the top surface of the tie-plate is flat instead of being longitudinally grooved as in the former case.

I claim as my invention v 1. The process of manufacturing a tie plate blank having a continuous transverse rib across its upper surface, the height of the rib varying at difierent points, said process consistingin first rolling a billet of metal into a continuous strip having longithen rolling the strip so as to displace the metal on the top surface of the plate in ad- Vance of the rib portion longitudinally to form a continuous transverse rib extending across the rib portion, and'to also displace the metal of said transverse rib in the direction of its length to make different said rib of unequal heights.

2. The process of manufacturing a tieplate blank having a continuous transverse rib across its upper surface, the height of the rib varying at different points of its length, said process consisting in first rolling a billet of metal into acontinuous strip having longitudinal grooves on its top surface and longitudinal flanges on its bottom surface in line with the grooves, and then rolling the stripso as to displace the metal on the top surface of the plate in advance of the rib portion longitudinally to form a conparts of tudinal flanges on its bottom surface, and

tinuous transverse rib extending across the r1b'p0rt10n and, havmg. pr01ect1ons mtermediate (the longitudinal grooves, and to alsodisplace the metal of said-transverse rib in. the direction of its length to make pro-- jections of unequal heights. In testimony, that .1 claim the foregoing as my inventlon I uifix my. s1gnature in the presence of witnesses; this 24th day of August D. 1908.

v "EDWIN BELL.

Witnesses:

C7 SAGE,-

F. M. YOUNG, W. L. HALL. 

